Thanks Paul. I haven't given much thought to what film I'd use, so thanks for the tips. I was thinking of using a fast chrome (slide) film for colour, and something very fast for B/W.
Can you tell me more about T adapters? I did a quick google search and I gather it's like a normal camera lens but it fits in the focuser; I must get one that fits my camera, and I need several for different magnifications...
Anyway, where do I get one of these T adapters?